Quarterly Report of RTRI
Online ISSN : 1880-1765
Print ISSN : 0033-9008
ISSN-L : 0033-9008
PAPERS
Study on Quantitative Evaluation Methods for Safety of Railway Signalling Systems
Ikuo WATANABEYuji HIRAOKoji IWATA
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2002 Volume 43 Issue 4 Pages 163-168

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Abstract

We present a new safety analysis method for railway signaling systems and introduce component fault occurrence probability vector, functional failure probability vector, correlation matrix between functional failures and component faults, mitigating matrix, and several other factors. By using these factors, we can estimate the risk of signalling systems, the effectiveness of safety measures, dangerous system failure probability and other related values. We also introduce a new automatic train control system and safety technologies, and evaluate the effectiveness of these technologies by calculating the elements of mitigating matrix.

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© 2002 by Railway Technical Research Institute
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